Replication factor in RWS and Cassandra keyspace

General Discussion
1

Dear Guy,

I just handover Genesys system and I found some thing different between Replication factor in RWS and Cassandra keyspace.

IRWS config:
replication_factor: 3

Cassandra keyspace: 6 nodes for DC and 6 Node for DR
6 DC, 6 DR

Is there any expert who can help me understand the issues?

  1. What is replication_factor in RWS use for?
  2. What is the impact when RWS replication_factor (In RWS) is not same as replication_factor in keyspace level of cassandra

Thanks so much.

2

Configuration related to the Cassandra cluster must be the same on both level (RWS and Cassandra cluster). What is the current replication factor on keyspace level within Cassandra cluster?

3

Current keyspace in my system is 6.
keyspace_name | durable_writes | strategy_class | strategy_options
--------------------±---------------±-----------------------------------------------------±----------------------
sipfs | True | org.apache.cassandra.locator.NetworkTopologyStrategy | {“DR1”:“6”,“DC1”:“6”}

4

Mandatory settings is the Cassandra one, so I strongly recommend to fix the incorrect config values on IRWS level